NuMediaExtractor.h revision b2487f03f12dcafdb801fc0007c8df8412397f44 
1/*
2 * Copyright 2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef NU_MEDIA_EXTRACTOR_H_
18#define NU_MEDIA_EXTRACTOR_H_
19
20#include <media/stagefright/foundation/ABase.h>
21#include <media/stagefright/MediaSource.h>
22#include <media/IMediaExtractor.h>
23#include <utils/Errors.h>
24#include <utils/KeyedVector.h>
25#include <utils/RefBase.h>
26#include <utils/String8.h>
27#include <utils/threads.h>
28#include <utils/Vector.h>
29
30namespace android {
31
32struct ABuffer;
33struct AMessage;
34class DataSource;
35struct IMediaHTTPService;
36class MediaBuffer;
37struct MediaExtractor;
38struct MediaSource;
39class MetaData;
40
41struct NuMediaExtractor : public RefBase {
42    enum SampleFlags {
43        SAMPLE_FLAG_SYNC        = 1,
44        SAMPLE_FLAG_ENCRYPTED   = 2,
45    };
46
47    NuMediaExtractor();
48
49    status_t setDataSource(
50            const sp<IMediaHTTPService> &httpService,
51            const char *path,
52            const KeyedVector<String8, String8> *headers = NULL);
53
54    status_t setDataSource(int fd, off64_t offset, off64_t size);
55
56    status_t setDataSource(const sp<DataSource> &datasource);
57
58    size_t countTracks() const;
59    status_t getTrackFormat(size_t index, sp<AMessage> *format) const;
60
61    status_t getFileFormat(sp<AMessage> *format) const;
62
63    status_t selectTrack(size_t index);
64    status_t unselectTrack(size_t index);
65
66    status_t seekTo(
67            int64_t timeUs,
68            MediaSource::ReadOptions::SeekMode mode =
69                MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
70
71    status_t advance();
72    status_t readSampleData(const sp<ABuffer> &buffer);
73    status_t getSampleTrackIndex(size_t *trackIndex);
74    status_t getSampleTime(int64_t *sampleTimeUs);
75    status_t getSampleMeta(sp<MetaData> *sampleMeta);
76
77    bool getCachedDuration(int64_t *durationUs, bool *eos) const;
78
79protected:
80    virtual ~NuMediaExtractor();
81
82private:
83    enum TrackFlags {
84        kIsVorbis       = 1,
85    };
86
87    struct TrackInfo {
88        sp<IMediaSource> mSource;
89        size_t mTrackIndex;
90        status_t mFinalResult;
91        MediaBuffer *mSample;
92        int64_t mSampleTimeUs;
93
94        uint32_t mTrackFlags;  // bitmask of "TrackFlags"
95    };
96
97    mutable Mutex mLock;
98
99    sp<DataSource> mDataSource;
100
101    sp<IMediaExtractor> mImpl;
102    bool mIsWidevineExtractor;
103
104    Vector<TrackInfo> mSelectedTracks;
105    int64_t mTotalBitrate;  // in bits/sec
106    int64_t mDurationUs;
107
108    ssize_t fetchTrackSamples(
109            int64_t seekTimeUs = -1ll,
110            MediaSource::ReadOptions::SeekMode mode =
111                MediaSource::ReadOptions::SEEK_CLOSEST_SYNC);
112
113    void releaseTrackSamples();
114
115    bool getTotalBitrate(int64_t *bitRate) const;
116    void updateDurationAndBitrate();
117
118    DISALLOW_EVIL_CONSTRUCTORS(NuMediaExtractor);
119};
120
121}  // namespace android
122
123#endif  // NU_MEDIA_EXTRACTOR_H_
124
125